Pretty much copied Minecraft's own sheet more or less not knowing quite what you wanted, but... changes welcome or whatever:
Code:
body {
background-repeat: repeat;
background-image: url('data:image/gif;base64,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');
background-color: #242424;
color: #E0D0D0;
font-family: 'Ubuntu', 'Calibri', 'Arial';
}
h1 {
background-repeat: repeat;
background-image: url('data:image/gif;base64,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');
padding: 3px;
font-size: 2em;
}
h2 {
font-size: 1.5em;
}
h3 {
font-size: 1.25em;
}
h1, h2, h3 {
font-family: 'Cambria';
}
a:link {
color: #9999ff;
}
a:visited {
color: #666699;
}
a:hover {
color: #ffffff;
}
a:active {
color: #ccccff;
}
Stipulations: Won't work (well) in IE6 or IE7, and I'm not sure about IE8.